Are you sure you have a 3.08? AOD's never came with 3.08, only 2.73 or 3.27.
Why do you need to rebuild the motor? A Vortech A-tirm would be a great investment and doesn't beat the motor to hell or need all new internals to be able to run it. What year/model stang do you have?
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1991 Mustang GT - Cobra Intake, FMS 65mm TB, C&L 73mm MAF, GT-40P heads, Crane 2031 cam, Crane 1.7rr, Built AOD, Art Carr 2400 non-lockup converter, Transgo shift kit, BBK chrome cold air, FMS 'P' headers, Pacesetter off-road H, BBK aluminum pulleys, 2-C Flows w/ dumps, 4.10's, Steeda STB, for now...
The Original GT-40P Tech Page